NPPES file of Aug 9, 2026

Aaron Justin Yeoh, MD

Gastroenterology Physician · Stanford, CA

Aaron Justin Yeoh, MD is a gastroenterology physician with a practice address in Stanford, California, and NPI 1043742331, issued on Mar 28, 2017. Check the license (California A156953, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1043742331
Name
Aaron Justin Yeoh
Credential
MD
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
A156953 CA
Self-reported in NPPES; status is on the state search
Practice location
300 Pasteur Dr, Stanford, CA 94305
Phone
(650) 723-4000
Enumerated
Mar 28, 2017
Record last updated
Apr 12, 2024
Medicare enrollment
Enrolled (PECOS I20230708000358); accepts Medicare assignment
Medical or professional school
Harvard Medical School, 2017
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 300 Pasteur Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Cooper Aakhus, MDEmergency Medicine Physician1194351007
  2. Oliver Aalami, M.D.Vascular Surgery Physician1225229024
  3. Alistair Aaronson, MDInternal Medicine Physician1457628760
  4. Sumaira Aasi, MDMOHS-Micrographic Surgery Physician1780675181
  5. Fahim Abbasi, M.D.Internal Medicine Physician1841484037
  6. Mohamad Abbass, MDNeurological Surgery Physician1679492151

Verify Aaron Justin Yeoh in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A156953
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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64% fewer Medicare Part D claims than the average gastroenterology physician in 2024

290 Medicare Part D claims for 133 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.

  1. Aaron Yeoh290
  2. Specialty average811

Most prescribed

  1. Peg 3350-Electrolyte53 claims
  2. Omeprazole40 claims
  3. Gavilyte-G21 claims
  4. Pantoprazole Sodium16 claims
  5. Linzess13 claims
  6. Mirtazapine12 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $1,230.40

7 payments; by number, the most common kind was travel and lodging; the largest payer was Boston Scientific Corporation. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Aaron Yeoh$1,230.40
  2. Specialty average$5,015.95

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

One hospital affiliation

  1. Stanford Health CareStanford, CA · Acute Care Hospitals5 of 5 stars

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Aaron Justin Yeoh among 2,140 gastroenterology physician records in California

Aaron Justin Yeoh, MD is one of 2,140 gastroenterology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 91% of them.

  • NPI issued2017 · 91% of these records are older, 6% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 72% of these records are
  • Graduated2017 · median 2002 among the 1,538 with a school on file
  • Record last updated2024 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

70 gastroenterology physician records list a practice address in Stanford

They are 70 of the 5,606 NPPES records with a practice address in Stanford, and 2,140 gastroenterology physician records in California.

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Aijaz Ahmed, MDStanford, CA 943051447351747
  2. Ashish Atreja, MDStanford, CA 943051831152883
  3. Ann Chen, MDStanford, CA 943051003840307
  4. Shai Friedland, M.D.Stanford, CA 943051316034655
  5. Jeffrey Glenn, M.D., PH.D.Stanford, CA 943051366523946
  6. Joo Hwang, MDStanford, CA 943051194815043
  7. Paul Kwo, M.D.Stanford, CA 943051578527008
  8. Uri Ladabaum, MDStanford, CA 943051245288059

Common questions

What is Aaron Justin Yeoh, MD's NPI number?

Aaron Justin Yeoh, MD's National Provider Identifier (NPI) is 1043742331, issued on Mar 28, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Aaron Justin Yeoh, MD located?

The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.

How can I verify Aaron Justin Yeoh, MD's license?

NPPES lists California license number A156953, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Aaron Justin Yeoh, MD prescribe under Medicare Part D?

In 2024, Aaron Justin Yeoh, MD had 290 Medicare Part D claims for 133 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.